thin section bearing Thrust bearings thrust ball bearings and thrust into roller bearings

Thrust ball bearings and thrust ball bearings and thrust into angular contact ball bearings. Raceway washer by the band and the ball and cage components and the shaft with raceway ring called shaft washer, and the shell with raceway ring called seat bidirectional bearing and the shaft will be in the high precision bearings ring with one-way bearings can withstand axial load, two-way bearings can withstand axial load. appear before the installation of seat spherical bearings with aligning properties, can reduce installation impact of errors. such bearings are mainly used in automobile steering mechanism, the machine spindle.

Thrust into thrust cylindrical roller bearings roller bearings, spherical roller thrust bearings, thrust tapered roller bearings, thrust needle roller bearings.

Thrust cylindrical roller bearings are mainly used in oil drilling rig, made ​​of iron steel machinery.

Axial spherical roller bearings These bearings are reali slim bearings‍ mainly used in hydroelectric power, vertical motors, marine propeller shaft, crane, extrusion machines.

Tapered Roller Bearings Thrust Bearing these main purposes: one way: crane hooks, swivels oil rig bidirectional: rolling mill roll neck.

Thrust bearing assembly mainly axial load, its wide application. Although the thrust bearing installation operation is relatively simple, but the actual repair is still often an error occurs, the tight and loose ring ring bearing mounting location that is incorrect, the results of the bearing out of action, the journal will soon be worn. Retaining ring mounted on the end face of the stationary member, the mounting error. Tight inner ring and the journal for transition fit to drive when the shaft is rotated tight ring, and the end surface friction with the stationary element, mobile crane bearing‍ the axial force in the subject (Fx), it will appear larger than the inner diameter of the friction torque with the drag torque, resulting in tight ring and the shaft with face mandatory rotation, aggravated journal wear.

LYHY slewing ring bearings Three-row roller slewing bearing combination

Slewing ring bearings

Three-row roller slewing ring has three seat down and radial raceways separately from each other, so that each row roller load can be determined exactly, can withstand all kinds of loads, is the carrying capacity of the four products the largest one, axial and radial dimensions are larger firm structure, particularly cross roller bearings‍ for applications that require larger diameter heavy machinery, such as bucket wheel excavators, wheeled cranes, ship cranes, ladle turret and large-tonnage truck cranes and other machinery on.

5.2 double row angular contact ball slewing ring bearings

Double row slewing bearing has three seat, ball and isolation block can be directly discharged into the upper and lower raceway, according to the situation by force, arranged up and down two rows of balls of different diameters.

This assembly is very convenient, carrying angle of both the upper and lower circular raceway is 90 °, can withstand large axial forces and tilting moments. When the axial force is greater than 0.1 times the radial force to be specially designed raceway. Double row slewing bearing axial, radial size was high precision bearings‍ relatively large, solid structure, particularly suitable to the requirements of the above average diameter of tower cranes, truck cranes and other handling machinery.

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5.3 Single-row cross roller slewing ring bearings

Single row cross roller slewing ring, consisting of two races, compact, light weight, high manufacturing precision, small assembly space for installation high precision roller 1: a cross arrangement, can withstand axial force, greater radial force and tilting moment. Is widely used in material handling, construction machinery and military products.

5.4 Single-row four point contact ball slewing ring bearings

Single-row four-point contact ball taper roller bearing‍ bearing slewing ring composed by two seats, compact, light weight, and circular raceway ball four point contact, can withstand the axial force, radial force and tilting moment. Rotary conveyors, welding operation machine, small cranes and excavators and other construction machinery can be selected.

LYHY slewing ring bearings Cage effect

1, to prevent direct contact between the rolling body to reduce friction and heat generation;

2, the rolling body guide;

3, to provide lubrication space;

In 4, install or Uninstall Excavator Slewing Bearing‍ can avoid a rolling body powder.

Three, the role of bearing

1, to support the shaft and parts on the shaft, to keep the rotating precision of shaft;

2, to reduce friction during rotation and wear;

Four, bearing selection principle

1, ball bearings than the limit speed of roller bearing high, priority should be given to the selection of ball bearing;

2, at high speed to the selection of bearing, ultra light, super light and light series (inner diameter and outer diameter, the smaller, the rolling body is light and small, self aligning ball bearing‍ centrifugal inertial force is small);

3, cage materials has a great influence on bearing speed, solid cage than stamping cage to allow higher speed;

The speed limit is 4, thrust bearing is very low, when working at high speed, if the axial load is not very big, can use the angular contact ball bearings to bear pure axial force;

5, if the speed exceeds the bearing sample, can be used to improve the tolerance level, increasing the clearance, the circulating cooling method.

Rolling installation and disassembling bearing

Assembling and disassembling bearing, to pay special attention to the following two points:

1, do not allow the rolling body force, miniature linear bearings‍ so as not to make the raceway and rolling body damage.

2, because the bearing with a tight, assembly and disassembly should use special tools.‍

slim ball bearing load bearin

 fixed load synthetic radial load by raceway parts undertaken, and delivered to the shaft or housing appropriate parts of the corresponding range wind appearance. The load bearing in Sweden called fixed bearing load. Unique local fixed load is mobile crane bearing‍ radial load and the synthesis of relatively static ring. Assume the fixed load. General can choose loose fit.

B. off the dynamic load effect for the synthesis of radial load vector bearing ring raceway of along the circumferential direction of the rotation, are borne by the various parts of the various parts of the raceway, and accordingly passed to the shaft casing hole appearance. This is called off load dynamic load, also called cyclic loading. Off the unique local dynamic load is angular contact bearing‍ relative to the rotating synthetic radial load vector and the ring. Take off the reproduced bearing ring and shaft or housing holes should choose clearance or interference fit. Synthesis of radial load vectors to the bearing ring raceway in the ring within a given area relative rocking, undertaken for the raceway certain region, and transmitted to the shaft or housing bore the appearance of certain region, or the effect is used for load bearing is the impact load, oscillating load, the the loading direction or digital often changes, the load is called rocking load, also called not the direction of load. Thin section bearings‍ Bearing rocking load, especially in the bear the heavy shoulder the burden, inside and outside the circle of which shall be deemed appropriate and use the interference fit. The inner rocking rotation, general inner ring that uses off the dynamic load when appropriate.

thin section bearing Common classification methods of rolling bearing

1 according to the rolling bearing structure type classification

(1) according to the loading direction which can bear or nominal contact angle is different, is divided into:

1) radial bearings - important reali slim bearings‍ for rolling bearings bear radial load, the nominal contact angle from 0 to 45. According to nominal

The contact angle is different, can be divided into: radial bearings - Nominal

The contact angle for radial bearing 0: angular contact radial bearings - nominal contact angle is larger than the radial bearings 0 to 45.

2) - an important thrust bearing used in rolling bearing under axial load, the nominal contact angle greater than 45 to 90. According to the public

Said contact angle Series super thin section bearings‍ different is divided into: axial contact bearing, male

Said contact angle for thrust bearing 90: thrust angular contact bearings, nominal contact angle greater than 45 but less than 90 of the thrust shaft

Bearing.

(2) according to the rolling bearing varieties, divided into:

1) ball bearing, roller ball:

2) roller bearings, roller roller. Roller bearing press roller variety, can be divided into: cylindrical roller bearing.

The rolling bearing cylindrical roller, cylindrical roller and the length of the straight

The ratio of diameter less than or equal to 3; needle roller bearings, needle roller bearing is a rolling body, the needle length to diameter ratio

In 3, but the diameter is less than or equal Taper roller bearings‍ to 5mm; tapered roller bearing

- the rolling bearings tapered roller; roller bearings by the rolling bearing spherical roller.‍

slewing ring bearings aligning bearings

aligning bearings, raceway is spherical shape, can adapt to the two bearing raceway deviation angle between the axis lines and angular high precision bearings‍ motion;

2) non self-aligning bearing (rigid bearing) - bearing raceway between the axis line impedance angle offset.

(4) according to the number of rolling body, divided into:

1) single row bearings -- with a rolling body bearing;

2) double row bearings -- with two rows of rolling bodies bearing;

3) multi row bearing - with more than two rows of rolling bodies bearing, such as the three column, four row bearings.

(5) according to their components are respectively, divided into:

1) respectively, Taper roller bearings‍ has respectively bearing bearing components;

2) can not be separately - bearing in the final after supporting bearings, rings are not bearing any free respectively.

(6) according to their structural shapes (such as with or without filling slots, with or without inner, outer ring and ring shape, structure, retaining edge very

To non retaining frame) can also be divided into structural types.

2 according to the rolling bearing size classification according to the outer diameter of bearing size, divided into:

(1) the miniature bearing, nominal diameter for bearing size below 26mm;

(2) small bearings -- nominal diameter size scale for 28-55mm bearing;

(3) small and medium-sized bearings, slewing bearing‍ nominal diameter size scale for 60-115mm bearing;

(4) in large bearing - Nominal outside diameter size scale for 120-190mm bearing

(5) the large bearing - nominal diameter size scale for 200-430mm bearing;

(6) extra large type bearing, nominal diameter size for the bearing more than 440mm.‍

slim ball bearing high precision bearings

 high precision bearings: robot bearings and CNC machine tool YRT turntable bearing

(1) the robot bearing: thin-walled cross wind power bearing‍ roller bearings, cross roller bearings, cylindrical roller in a V shaped groove 90 degrees

The rolling surface through the isolated blocks are arranged vertically, the

To cross roller bearings can bear radial load, axial load and torque load and multi direction load. The inner ring and the outer ring Other bearing‍ gauge

"Is small, thin form is more close to the limit of small

Type size, and has the advantages of high rigidity, and the precision can reach P5, P4, P2. (2) YRT rotary bearing, by a push

Centripetal force / seat, a thrust / radial shaft washer, a thrust washer, two needle roller and cage assemblies and a set of concentric

Cylindrical roller.

Seat ring and the shaft ring with a single direction thrust ball bearing‍ screw hole with a uniform installation. This type of bearing with high axial and radial load capacity.

thin section bearing Cross roller bearings

1, deep groove ball bearing

Continuous groove type 1.1 structure of deep groove ball bearings on each ring has a cross-section of approximately spherical perimeter 1/3 raceway. It is mainly used to bear radial load, also can withstand the axial load.

1.2 in the bearing Liner Motion Bearings‍ radial clearance increases, with the nature of angular contact ball bearing, the axial load bearing two directions alternating.

1.3 small friction, high speed.

1.4 has the advantages of simple structure, low manufacturing cost, easy to manufacture high precision.

1.5 general methods of stamping cage shaft bearings‍ diameter greater than 200mm, the thin section bearing or high-speed operation, the use of the car business entity retainer. Variant structure of deep groove ball bearing as many as 60.

slewing ring bearings angular contact ball bearing

Can bear radial load and axial load, high speed, the larger the contact angle, the higher the axial bearing capacity. Single row bearings can only bear the axial load in one direction, in radial load, will cause additional axial force. The axial displacement Crossed Roller Slewing Bearing‍ of the bearing can limit shaft or shell in one direction. If quality.the installation, the outer ring of a bearing on the relative, the wide end of the wide face, narrow end face with narrow end. So to avoid the additional axial force, but also in the two direction of the shaft or shell limit in the axial clearance range. Structural change of angular contact ball bearing as many as 70.

The 2.1 Full complement cylindrical roller bearings‍ contact angle is 15 °, 25 °. 40 degrees three, the larger the contact angle of the axial bearing capacity is higher. High precision and high speed bearings usually take 15 degrees contact angle, under the action of axial force, contact angle increases. The 2.2 is the inner or outer lock, inner, outer ring can not be separated. The outer ring and the inner ring heating after expansion, the rolling body, the holder assembly. Ball number ratio of deep groove ball bearing. Rated load in ball bearings in the largest, strong rigidity, smooth operation.

2.3 can use inner, outer mutual displacement adjustment radial clearance. Often used in pairs, and applying a pre load, in order to improve the bearing stiffness.

3, cylindrical roller bearings

3.1 roller and raceway for slewing rings‍ the line of contact, radial load capacity, suitable for heavy load and shock load.

3.2 the friction coefficient is small, suitable for high-speed, the speed limit is close to the deep groove ball bearing.‍

slim ball bearing

N type and NU type axial moving, can adapt to the changes due to thermal expansion and installation error of the shaft and the casing crossed roller bearings‍ relative position, can be used as a free end bearing.

Use. The inner or outer ring can be separated, which is convenient for installation and disassembly. 3.4 the processing requirements of shaft and hole high, slim ball ‍bearing inner and outer ring axis relative deviation after installation must strictly control, so as to avoid the contact stress concentration. Hole with 1:12 taper double row cylindrical roller bearings 3.5, precision spindle bearings‍ radial clearance can be adjusted, radial rigidity is high, suitable for machine tool spindles.

The 3.6 cross roller bearings, cylindrical roller in a V shaped groove 90 degree roll surface through the isolated blocks are arranged vertically, so the cross roller bearings can bear radial load, axial load and torque load and multi direction load. The inner ring and the outer ring size is miniaturized, thin form is small size is close to the limit, and has the advantages of high rigidity, and the precision can reach P5 P4, P2. The rotary table is therefore suitable for industrial robot joint part and a rotating part, reali slim bearings‍ machining centers, precision equipment rotary table, medical equipment, calculators, military industry, IC manufacturing equipment etc..

thin section bearing the tapered roller bearing

Separation type bearings, bearings, have tapered raceway, roller is truncated. Roller and raceway for the line of contact, can bear high precision bearings‍ radial and axial loads heavier, can also be subject to pure axial load. The larger the contact angle, the higher the axial bearing capacity. Contact line design of tapered roller should make the roller and the inner and the outer raceway extended to the thin section bearing axis at the same point, in order to realize pure rolling. Tapered roller bearing the new design with the reinforced structure, roller diameter increases, the roller length, roller number increase, Flange Slewing Bearing‍ the convex roller, so that the bearing capacity and the fatigue life of bearing significantly improve. Spherical and conical surface contact between the roller large end face and large rib, improve the lubrication.

This kind of bearing according to the number of columns of the roller can be divided into single row, double row and four row tapered roller bearings of different structure types. This type of bearing is also used Inch series products.‍

slewing ring bearings thrust ball bearing

 thrust ball bearing is separable bearing, the contact angle of 90 °, can be installed separately, only can withstand the axial load. Low speed limit. Steel ball and centrifugal force pushed the raceway outer, easy bruising, but not suitable for high speed cross roller bearings‍ operation. A one-way bearing can bear axial load, two-way two-way bearings can withstand axial load. Thrust ball bearing with spherical seat with adjustable mind

Can, can eliminate the influence of the installation error.

6, thrust cylindrical roller bearings are separable bearing. Can bear axial load, radial displacement of the shaft can limit. Bearing rigidity, small high precision bearings‍ occupied space, the axial load capacity, low sensitivity to shock load. Suitable for low speed, the workplace is commonly used in the thrust ball bearings are not applicable. The installation does not allow the axis of the shaft and housing tilt.

7, spherical roller thrust bearing

Separation type bearings, the load line and the bearing axis to form a certain angle, axial load capacity, under axial load and can bear radial load certain. bearing‍ This type of bearings, spherical roller tilt alignment, raceway is spherical, with self-aligning properties, therefore allowing a plurality of inclined shaft. Can be used in heavy load situation, allowing high speed. The use of lubricating oil.